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RMC685 high accuracy transmitter for temperature and process applications

RMC685 high accuracy transmitter for temperature and process applications
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RMC685 high accuracy transmitter for temperature and process applications - 1

sales@nokeval.com www.nokeval.com RMC685 high accuracy transmitter for temperature and process applications • RTD, thermoelements, CU10 , 0/4...20 mA or 0...5/10V, mV, ohm • Analog output 0/4...20 mA or 0...5/10V • Serial output RS-485, Modbus RTU or Nokeval SCL protocol • Mathematical functions • 10-points linearization table • Input sampling time up to 100 samples/s for serial output • Two row text display can be shown user’s own messages • Configuration by front keys or series bus from PC • Free calibration certificate can be loaded from our website • Voltage supply 15V for two wire transmitter • Power supply supply 24 VDC RMC685 has been designed for temperature sensors and process inputs in where high accuracy is required. The display screen is useful for users in where process information is necessary. Further it can be used for configurations or showing messages to users. Several message screens can be created which are selected by front keys select them easily by front keys. The configuration can be made without programming devices by using front panel keys or the MekuWin configuration program via serial bus RS485 from PC. Mathematical functions and linearization can be created by MekuWin configuration software. The measuring speed can be as many as 100 measurings per second when the output is a serial bus RS485. The measuring speed of the transmitter gives the opportunity to use transmitters in the applications where the simultaneous measuring with the separate transmitters is important. It is simple to write the mathematical functions or operational conditions on the configuration programme MekuWin. Several different views or messages which the user can choose easily with buttons can be set on the display screen. Power supply to 2 wire tranmitters Power supply 15 V, 50 mA Sarjaviesti Nokeval SCL Modbus RTU Input Display Galvanic isolation Analog output RTD sensors: Pt100, Pt1000 ym. Thermocouples: B, C, D, E, G, J, K, L, N, R, S, T Process inputs 0..20 mA, 4..20 mA, ±20 mA 0..1 V, ±1 V, 0..10 V, ±10 V, mV Resistance: 0...10.000 Ω Linearization table Serial output RS485 Nokeval SCL Modbus RTU Configuration via serial signal User’s functions F1..F12 registers Serial output For example measurement data can be moved to the user's registers F1...F12 or calculation results from which the output functions are defined Digital input External control of functions e.g. hold, tare etc.

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RMC685 high accuracy transmitter for temperature and process applications - 2

Connections Analog output Special functions The digital input can be utilised to manifold functions for example for the freeing of the holding, for the directing of the filter on and away resetting of the totalizator. The NPN input is connected to the pin B1, internal up the resistor is 10 kΩ , max 5 V. Potential free closing contact can be use. Digital input Pwr/Alm Serial The table function is used for linearization a nonlinear input typically. It can be used also for the correcting of the mistake of the temperature sensor in several points and to many other purposes, together with the...

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RMC685 high accuracy transmitter for temperature and process applications - 3

Specifications Environmental Operating temp Storage temp Humidity Altitude Protection Pollution degree Dimensions Weight Power supply Voltage Typical current Max current Galvanic isolation Description -20…+60 °C (the LCD will be readable at 0…50 °C) -20…+60 °C 10…90 %Rh non-condensing Max 2000 m IP 20 2 23×110×117 WHD 130 g 24 V DC ±15% 25 mA without mA output nor transmitter supply 120 mA These groups are isolated from each other: 1) Power supply. 2) Input. 3) Analog output, RS-485, digital input, and programming connector share a common ground. Isolation voltage 50 V AC or 120 V DC...

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RMC685 high accuracy transmitter for temperature and process applications - 4

RS-485 bus Protocols Baud rates Modbus parity Min response time Typ response time Nokeval SCL and Modbus RTU 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bits/s 8E1, 8O1, 8N2, 8N1 3.5 characters or 1.7 ms whichever greater Querying one reading: the same as Min response time. 15 ms when reading input register 1 or 1001. Much longer when operating with holding registers. 1. Data acquisition software and analog outpus 2. 9-channel display 2072 scanning transmitters

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